package com.foreknow.demo9;

/**
 * 抽象类的定义
 */
public abstract class Person {
    /**
     * eat
     */
    public abstract void eat();

    /**
     * study
     */
    public abstract void study();

    /**
     * sleep
     */
    public abstract void sleep();

    /**
     * game
     */
    public abstract void game();
}
